You’ve observed the following returns on Crash-n-Burn Computer’s stock over the past five years: 5 percent, -10 percent, 30 percent, 15 percent, and 13 percent.

Requirement 1:

What was the arithmetic average return on Crash-n-Burn’s stock over this five year period?

Requirement 2:

(a) What was the variance of Crash-n-Burn’s returns over this period? (Do not round intermediate calculations.)

(b) What was the standard deviation of Crash-n-Burn’s returns over this period? (Do not round intermediate calculations.)